/*
 * ==========================================================================================
 * =                   JAHIA'S DUAL LICENSING - IMPORTANT INFORMATION                       =
 * ==========================================================================================
 *
 *                                 http://www.jahia.com
 *
 *     Copyright (C) 2002-2020 Jahia Solutions Group SA. All rights reserved.
 *
 *     THIS FILE IS AVAILABLE UNDER TWO DIFFERENT LICENSES:
 *     1/GPL OR 2/JSEL
 *
 *     1/ GPL
 *     ==================================================================================
 *
 *     IF YOU DECIDE TO CHOOSE THE GPL LICENSE, YOU MUST COMPLY WITH THE FOLLOWING TERMS:
 *
 *     This program is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 *
 *     This program is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 *     GNU General Public License for more details.
 *
 *     You should have received a copy of the GNU General Public License
 *     along with this program. If not, see <http://www.gnu.org/licenses/>.
 *
 *
 *     2/ JSEL - Commercial and Supported Versions of the program
 *     ===================================================================================
 *
 *     IF YOU DECIDE TO CHOOSE THE JSEL LICENSE, YOU MUST COMPLY WITH THE FOLLOWING TERMS:
 *
 *     Alternatively, commercial and supported versions of the program - also known as
 *     Enterprise Distributions - must be used in accordance with the terms and conditions
 *     contained in a separate written agreement between you and Jahia Solutions Group SA.
 *
 *     If you are unsure which license is appropriate for your use,
 *     please contact the sales department at sales@jahia.com.
 */
package org.jahia.services.workflow;

import org.slf4j.Logger;

import java.util.ArrayList;
import java.util.List;

public class WorkflowObservationManager {
    private static final Logger logger = org.slf4j.LoggerFactory.getLogger(WorkflowObservationManager.class);

    private WorkflowService service;
    private List<WorkflowListener> listeners = new ArrayList<WorkflowListener>();

    public WorkflowObservationManager(WorkflowService service) {
        this.service = service;
    }

    public void notifyWorkflowStarted(String provider, String workflowId) {
        Workflow wf = service.getWorkflow(provider, workflowId, null);
        for (WorkflowListener listener : listeners) {
            try {
                listener.workflowStarted(wf);
            } catch (Exception e) {
                logger.error(e.getMessage(), e);
            }
        }
    }

    public void notifyWorkflowEnded(String provider, String workflowId) {
        HistoryWorkflow wf = service.getHistoryWorkflow(workflowId, provider, null);
        for (WorkflowListener listener : listeners) {
            try {
                listener.workflowEnded(wf);
            } catch (Exception e) {
                logger.error(e.getMessage(), e);
            }
        }
    }

    public void notifyNewTask(String provider, String taskId) {
        WorkflowTask task = service.getWorkflowTask(taskId, provider,null);
        for (WorkflowListener listener : listeners) {
            try {
                listener.newTaskCreated(task);
            } catch (Exception e) {
                logger.error(e.getMessage(), e);
            }
        }
    }

    public void notifyTaskEnded(String provider, String taskId) {
        WorkflowTask task = service.getWorkflowTask(taskId, provider,null);
        for (WorkflowListener listener : listeners) {
            try {
                listener.taskEnded(task);
            } catch (Exception e) {
                logger.error(e.getMessage(), e);
            }
        }
    }

    public void addWorkflowListener(WorkflowListener listener) {
        listeners.add(listener);
    }


}
